He's seeing the same issue in both Firefox and IE (see the last sentence in his post about it).

I see a similar problem with pages not rendered properly on a regular basis using Firefox under Linux (where I may not see background colors, etc.), and usually just refreshing the page or trying it again in a few minutes fixes the issue).

Ditto for server errors viewing forums here at dpreview.com (I've been seeing them multiple times per day for a while now, where it may take me multiple attempts to complete making a post or viewing a thread without seeing the errors, with a dpreview.com error page coming up when it happens each time).